Question

The peptide that gives positive ceric ammonium nitrate and carbylamine tests is :

• A. Lys-Asp
• B. Ser-Lys
• C. Gln-Asp
• D. Asp-Gln

Answer 1

Answer: (B)

Ser-Lys

Answer 2

Lysine has $-NH_2$ group hence gives $\oplus ve$ carbyl amine test and serine has $-OH$ group hence gives $\oplus ve$ serric ammonium nitrate test